Question about 1999 Dodge Ram

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99 dodge ram surges up and down when cold at idle

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  • 44 Answers

Clean Throttle body with recommend clean like Gum out .

Posted on Feb 20, 2015

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Posted on Jan 02, 2017

emissionwiz
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SOURCE: dodge ram 1500 engine rpms surge at freeway speed

those sensors could cause the issue, clean the MAF 1st, also clean the idle system using the following procedure, the IAC can cause cruise surge. I use this to cure these problems all the time.

Here is the most common cause of surges and stalls and low idle, it is the idle speed control air-bypass valve (IAC) and throttle valve, they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Jan 13, 2009

rockitman187
  • 2559 Answers

SOURCE: Dodge ram rough cold start idle

Change the EGR valve.

Posted on May 05, 2009

c17hydro
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SOURCE: towing capacity of 99 dodge ram v6 1/2 ton p/u

It is 7,950 lbs.

Posted on Jul 21, 2009

  • 38 Answers

SOURCE: 99 dodge ram 2500 5.9l gas revs when idling cold

my dads ford does that also it is normal

Posted on Jul 31, 2009

  • 2 Answers

SOURCE: 99 dodge ram 2500 diesel no power at highway

99 had no glow plugs just a manifold heater not the problem its the injector pump my 5.9 had the same problem and i replaced lift pump all 6 injectors trying to not have to replace injector pump and it turned out that the vp44 injector pump by bosch was the culprit

Posted on Apr 27, 2010

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1 Answer

I have a 99 civic 4 door and the engine surges at idle


hot engine or cold, or both???????????????????
surging or hunting idle is complex but for sure the ECU has lost control of idle speed , there are 2 macro reasons, (vast causes)
1: ISC is stuck (in non SAE terms, the idle speed control valve ) is stuck.
2: engine is missing cause the ISC to GO NUTS trying to control
idle and can not.. the 50 reasons, , have list ask.
we do tests to find out if either or both the above are bad.
do you want tests, or guessing>???

Jan 22, 2014 | 1999 Honda Civic

1 Answer

I have a 1996 dodge ram 1500 5.2L V-8 and i have replaced the tps with a brand new one two times and my truck still idles up and down. I haven't got a clue what is making it do it.


look for a vacuum leak the plastic intake manifolds crack when the engine is cold spay the intake with carb cleaner you will hear the idle raise or stumble depending on the size of the leak

Jul 07, 2012 | 1996 Dodge Ram 1500 Club Cab

1 Answer

99 dodge ram 1500 4x4 automatic,i chnaged the thermostat and refiled with new anti freeze let it run and keep topping off until full then i filled the overflow bottle to required level,i have some heat...


I had the same problem after I changed the water pump I had a air pocket that took about a week to finily work its way out the heater core is high up and holds air this makes it hard to get all the air out

Dec 17, 2010 | 1999 Dodge Ram

1 Answer

Upon starting 99 ram 1500 it starts to idle down and almost die but once i give it gas its fine for a while what to do?


Have someone check the idle air control valve. When you are idling the intake air takes a different path into the motor than it does when you depress the accelerator. A hunting / erratic idle is a good indicator of a faulty IAC. Sometimes you can clean them but best to replace.

Dec 07, 2010 | 1999 Dodge Ram

1 Answer

99 dodge ram 2500 5.9l gas revs when idling cold


my dads ford does that also it is normal

Jul 31, 2009 | 1999 Dodge Ram

2 Answers

99 Dodge Durango Dies When Slowing


Here is the most common cause of surges and stalls and low idle rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Feb 09, 2009 | 1999 Dodge Durango

1 Answer

Dodge ram 1500 engine rpms surge at freeway speed


those sensors could cause the issue, clean the MAF 1st, also clean the idle system using the following procedure, the IAC can cause cruise surge. I use this to cure these problems all the time.

Here is the most common cause of surges and stalls and low idle, it is the idle speed control air-bypass valve (IAC) and throttle valve, they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Jan 13, 2009 | 2001 Dodge Ram 2500 Truck

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